Decolorization and degradation of H-acid and other dyes using ferrous-hydrogen peroxide system.
Decolorization and degradation of H-acid and other dyes using ferrous-hydrogen peroxide system.
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DOI：
10.1016/s0045-6535(02)00615-x
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发表时间：
2003-02
期刊：
影响因子：
8.8
通讯作者：
K. Swaminathan;S. Sandhya;A. Carmalin Sophia;K. Pachhade;Y. Subrahmanyam
中科院分区：
文献类型：
--
作者：
K. Swaminathan;S. Sandhya;A. Carmalin Sophia;K. Pachhade;Y. Subrahmanyam
本研究利用芬顿反应的高级氧化技术对两种工业染料进行脱色降解，红色M5 B、蓝色MR和H酸，一种染料中间体，用于化学工业中合成直接、活性和偶氮染料。研究了Fe 2+、H2 O2、pH和接触时间对染料降解的影响。在pH 3.0下，在10-25 mg/l的Fe 2+剂量和400-500 mg/l的H2 O2剂量下，获得了红色M5 B、H-酸和蓝色MR的最大颜色和COD去除。初始氧化反应符合一级反应动力学，H酸的氧化速率高于其它染料。从芬顿处理的红色M5 B染料中释放出氯化物和硫酸盐，从H-酸和蓝色MR中释放出硫酸盐，表明染料降解通过取代基的裂解进行。
In this study, advanced oxidation process utilizing Fenton’s reaction was investigated for the decolorization and degradation of two commercial dyes viz., Red M5B, Blue MR and H-acid, a dye intermediate used in chemical industries for the synthesis of direct, reactive and azo dyes. Effect of Fe2+, H2O2, pH, and contact time on the degradation of the dyes was studied. Maximum color and COD removal was obtained for Red M5B, H-acid and Blue MR at 10–25 mg/l of Fe2+dose and 400–500 mg/l of H2O2dose at pH 3.0. The initial oxidation reaction was found to fit into first order rate kinetics and the rate of oxidation of H-acid was higher than the other dyes. Release of chloride and sulfate from the Fenton’s treated Red M5B dye and sulfate from H-acid and Blue MR indicates that the dye degradation proceeds through cleavage of the substituent group.